The flux pinning energy studies of (Mo/W) co-doping bulk BPSCCO superconductor

Agil A. A., GÜNDOĞMUŞ H., Karataş Ş.

Journal of Materials Science: Materials in Electronics, vol.33, no.21, pp.17090-17099, 2022 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 33 Issue: 21
  • Publication Date: 2022
  • Doi Number: 10.1007/s10854-022-08585-z
  • Journal Name: Journal of Materials Science: Materials in Electronics
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Applied Science & Technology Source, Chemical Abstracts Core, Communication Abstracts, Compendex, Computer & Applied Sciences, INSPEC, MEDLINE, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.17090-17099
  • Hakkari University Affiliated: Yes

Abstract

In this study, pure and Mo/W co-doped Bi-based superconducting samples were prepared by conventional solid-state reaction method. The effects of co-doping Mo and W were investigated by magneto-resistivity measurements (ρ-T) under various magnetic fields. The critical current density (Jc) was determined from the width of the hysteresis (M-H) curves using the Bean model and it was found that the pure sample showed the best value with a value of 1.53 × 104 A/cm2 at 10 K. The pinning force was calculated using the Jc values and it was found that the pure sample with the highest Jc value naturally had the maximum pinning force which is directly proportional to Jc. The flux pinning energies (i.e., activation energies) were determined using Arrhenius plots. A thermally activated flux flow (TAFF) model was used to calculate these energies. The activation energy ranged from 0.52302 to 0.286005 eV under 0 T. In addition, resistivity measurements (ρ-T) were used to calculate the coherence length (ξ(0)) at 10 K.